/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.genitus.drum.core

import com.lmax.disruptor.WorkHandler

/**
  * Buffer work handler.
  *
  * @author gwjiang (gwjiang@iflytek.com), 2016/8/24.
  */
trait Handler extends WorkHandler[MessageEvent] {
  /**
    * Drain the handler's cache
    */
  def drain(): Unit

  /**
    * Report workhandler's progreas.
    *
    * @return workhandler's progreas, (puts, takes)
    */
  def reportProgress(): (Long, Long)

  /**
    * Close message handler.
    */
  def close(): Unit
}
